Freelance Software Engineer – Full Stack, Node.js, React, TypeScript

🕒 July 8

🇩🇪 Germany – Remote

⏰ Full Time

🟡 Mid-level

🟠 Senior

🧑‍💻 Full-stack Engineer

👻 Ghost score 20%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Atmen

WebsiteLinkedInAll Job Openings

11 - 50 employees

Founded 2023

💼 Consulting

🏥 Healthcare

📦 Logistics

💰 $5.7M Seed Round - Atmen on 2025-06

Consulting • Healthcare • Logistics

Atmen is a B2B SaaS platform that automates and streamlines sustainability certification and regulatory compliance for decarbonized energy supply chains, focusing on hydrogen, e‑fuels, and biomethane. It ingests real‑time supply chain and energy data, models certifiability, simulates procurement strategies, and prepares audit‑ready documentation to help companies secure and maintain green certifications across markets. The company combines software, regulatory expertise, and integrations to enable continuous compliance, de‑risk audits, and support business developers, procurement teams, and engineers working on low‑carbon products.

📋 Description

• Design, build, and maintain full-stack applications using Node.js, React, TypeScript, NestJS, and PostgreSQL. • Develop and maintain integrations with external APIs, including REST and other web service technologies. • Extend and customize our core platform to meet customer-specific business requirements. • Design clean, maintainable, and scalable backend services and frontend applications. • Collaborate with customers and internal stakeholders to understand integration requirements and translate them into technical solutions. • Troubleshoot integration issues across distributed systems and work with third-party vendors when necessary. • Write well-tested, production-ready code with a focus on reliability, performance, and security. • Participate in code reviews, architecture discussions, and continuous improvement initiatives. • Contribute to documentation for integrations, APIs, and internal development processes.

🎯 Requirements

• Strong experience with TypeScript. • Professional experience developing backend services with Node.js and NestJS. • Experience building modern frontend applications with React. • Solid understanding of PostgreSQL and relational database design. • Experience consuming and integrating external APIs. • Good understanding of RESTful API design and HTTP protocols. • Experience with Git and collaborative software development practices. • Strong problem-solving skills and the ability to work independently. • Excellent communication skills and the ability to work directly with both technical and non-technical stakeholders.

🏖️ Benefits

• Asynchronous first: We minimise unnecessary meetings and document everything in Notion. • Focus time & deep work: Meetings-free mornings + 1 in-office Team Day per week. • Fast-paced, iterative development: We push to main frequently and release several times per week. • Strong testing culture: Pragmatic test-driven development (TDD), heavy use of E2E tests.